'Media type ignored in open api response

I'm trying to include a bad request (400) response schemas in the open api document for the web api I'm building in .NET 6. The problem is, the media type always defaults to application/octet-stream even though I explicitly set it to application/json.

My controller is decorated with the following attribute:

[ProducesResponseType((int)HttpStatusCode.OK)]
[ProducesResponseType(typeof(BadRequestResult), (int)HttpStatusCode.BadRequest, "application/json")]

But, the media type for the response 400 is incorrect in the generated open api document:

"200": {
  "description": "",
  "content": {
    "application/json": {
      "schema": {
        "$ref": "#/components/schemas/Foo"
      }
    }
  }
},
"400": {
  "description": "",
  "content": {
    "application/octet-stream": {
      "schema": {
        "type": "string",
        "format": "binary"
      }
    }
  }
}

Am I missing something or is this a bug in NSwag?

Solution 1:^[1]

So this is no bug, I was using ObjectResult as the response type instead of ProblemDetails. Apparently this class could not be serialized or something and that produced a different response media type. So no bug!

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Source: Stack Overflow

Solution	Source
Solution 1	mafus1

'Media type ignored in open api response

Solution 1:[1]

Sources

Related Questions

Solution 1:^[1]